PHP array_uintersect() Function

The array_uintersect() function compares two or more arrays, in a user-made function, and returns an array containing the elements from the first array, if the user-made function allows it. The user-made function compares array values, and returns a numeric value, 0 if the returned array should contain this element.

Syntax

 array_uintersect(array1,array2,array3...,myfunction) 

Example

function myfunctiondemo($a,$b)
{
if ($a===$b)
  {
  return 0;
  }
  return ($a>$b)?1:-1;
}

$array1=array("a"=>"Cooper","b"=>"Samuel","c"=>"Lachlan");
$array2=array("a"=>"Lachlan","b"=>"James","e"=>"Lachlan");

$result=array_uintersect($array1,$array2,"myfunctiondemo");
print_r($result);

Output

Array ( [c] => Lachlan )